An instrument for finding the focal length of a lens; spec. an instrument for finding the chemical focus of a lens, esp. in relation to the visual…
| 单词 | θ229730 |
| 释义 | society > leisure > the arts > visual arts > photography > camera > parts and accessories of camera > [noun] > lens > instrument for finding chemical focus (1) focimeter1828 An instrument for finding the focal length of a lens; spec. an instrument for finding the chemical focus of a lens, esp. in relation to the visual… |
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